试题与答案

细小的火山灰中含有二氧化硅,这种化合物的熔点是1100摄氏度。而目前大部分飞机的涡轮

题型:单项选择题

题目:

细小的火山灰中含有二氧化硅,这种化合物的熔点是1100摄氏度。而目前大部分飞机的涡轮发动机工作温度为1400摄氏度,一旦火山灰被吸入引擎的内部,二氧化硅溶化后就会吸附在涡轮叶片和涡轮导向叶片上,导致灾难性后果。1982年,两架飞机曾经从印度尼西亚西爪哇省加隆贡火山喷发的火山灰中穿过,两架飞机的八个引擎全部停转,在从11000米高空滑翔至400米高度后才重新启动得以紧急迫降。
这段文字主要介绍( )。

A.火山灰对飞机飞行有严重影响
B.二氧化石硅是火山灰的主要成分
C.降温能使飞机有效避免火山灰的危害
D.历史上火山喷发曾险些导致飞行事故

答案:

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参考答案:5607.9090

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第二节:完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后所给各题的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

I am a team leader in an insurance company. We are going through a lot of changes right now, which is  36  much stress for all of us.

A few weeks ago I was having a day so  37  that I even doubted if I had the ability to do this challenging work, and was about ready to change to a less stressful job  38  . Something happened that day to change my way of  39  and I am so appreciative of this young lady. I want to let her know that the small act  40  .

On the top of my cubicle (工作隔间) I have a small collection of lighthouses (灯塔) to let people know where I am sitting  41  my team members have to find me for emergencies.

That day I came into the office and was about to get the day  42  when Crystal came over. l asked if she needed anything. She said, "I  43  you something. " I looked at her with a  44  look and said, "Well, thank you, but why  45  you buy me anything?" I had never spoke to this young lady   _46  . She said, "Every day I stand up and look across the  47  and see your lighthouses. Then I feel I am not alone and I encourage myself that there are always  48  things in life. I saw this on the way to work and thought  49  would like it. I wish it would have the same  50  as your Lighthouses do. " In her hand she had a small globe with a Lighthouse and a ship on it. I gave her a hug and  51  her. I don't think she knows how much that small act of  52   changed my day: 1 remained  53  the rest of the day.

For anyone that reads this, I hope you remember, no matter what the  54   is, you could change

someone's day,  55  even his views on life.

36. A. preventing              B. reducing            C. causing            D. suffering

37. A. funny              B. nice               C. bad              D. dull

38. A. everywhere          B. elsewhere            C. anywhere          D. nowhere

39. A. working             B. behaving          C. speaking            D. thinking

40. A. broke my heart       B. touched my heart   C. lost my heart       D. tore my heart

41. A. in case                B. so that              C. as if              D. even though

42. A. ended                  B. started             C. changed            D. avoided

43. A. borrowed          B. lent               C. sold               D. bought

44. A. delighted               B. puzzled            C. thankful            D. worried

45. A. might              B. dare                C. could                      D. would

46. A. before              B. then                    C. since              D. after

47. A. dorm              B. office             C. ship               D. tower

48. A. bright             B. challenging        C. bad               D. stressful

49. A. colleagues          B. leaders            C. you                D. I

50. A. opinion            B. cause              C. expectation         D. effect

51. A. praised             B. thanked             C. scolded             D. refund

62. A. justice               B. courage             C. kindness             D. tolerance

53. A. careful             B. encouraged         C. tired                       D. alone

54. A. present               B. work               C. gesture             D. intention

55. A. so                 B. for                 C. or                  D. nor

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题型:填空题

使用VC++6.0打开考生文件夹下的源程序文件3.cpp。其中定义的类不完整,按要求完成下列操作,将类的定义补充完整。每卖出一个水果,则计算水果的重量,还要计算所有卖出水果的总重量以及总个数,同时允许退货,请按照以下的操作,把类补充完整。
(1)定义类TCFruit的私有静态数据成员float型变量AllWeight和int型变量AllNo,请在注释1后添加适当的语句。
(2)完成类TCFruit的带一个float型变量w的构造函数,并把这个w加到AllWeight中,并且AllNo自加。请在注释2后添加适当的语句。
(3)在析构函数中,在AllWeight中减去weight,然后AllNo自减,请在注释3后添加适当的语句。
(4)完成静态成员变量的初始化为0,请在注释4后添加适当的语句。
注意:增加或者修改代码的位置已经用符号表示出来,请不要修改其他的程序代码。
试题程序:
#include<iostream.h>
class TCFruit

private:
float Weight;
//********1********
static int AllNo;
public:
TCFruit(float w)

//********2********
AllWeight+=w;
AllNo++;

~TCFruit()

//*******岳3********
AllWeight-=Weight;

void display()

cout<<"Sell a Fruit with"<<Weight<<"kg"<<end1;
cout<<"All sell number:"<<AllNo<<end1;
cout<<"All sell weight:"<<AllWeight<<"kg"<<end1<<end1;


//********4********
float TCFruit::AllWeight=0.0;
int main()

TCFruit Fruit1(1.2);
Fruit1.display();
TCFruit Fruit2(2.3);
Fruit2.display();
return 0;

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